A disorder where the pituitary gland releases too much of a hormone called prolactin.
Hyperprolactinemia is a condition where there are excess levels of a hormone called prolactin circulating in the body.
Prolactin is released by the pituitary gland to stimulate breast milk production during pregnancy and breastfeeding. Hyperprolactinemia is often caused by a tumor on the pituitary gland called a prolactinoma. Excess levels of prolactin can cause sexual and menstrual dysfunction.